QUESTION 10: The circuit parameters for diff-amp shown in Figure 11.30

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QUESTION 10: The circuit parameters for diff-amp shown in Figure 11.30 are V+ = 6 V, V− = −6 V, and IQ = 0.52 mA. The transistor parameters are β = 66, VA1 = VA2 = 105 V, VA3 = VA4 = 75 V, and VA5 = ∞. Determine the open-circuit differential-mode voltage gain. What is the output resistance of the diff-amp? Find the value of load resistance RL that reduces the differential-mode gain to 74 percent of the open-circuit value. Ad (open circuit) Format : 4622.5359058583 Ro(kΩ) Format : 782.54629054754 RL(kΩ) Format : 948.8308389362 Figure 11.30

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QUESTION 10: The circuit parameters for diff-amp shown in Figure 11.30 are

V^{+} = 6 V, V^{-} = - 6 V

, and

I_{Q} = 0.52 m A

. The transistor parameters are

β = 66, V_{A 1} = V_{A 2} = 105 V, V_{A 3} = V_{A 4} = 75 V

, and

V_{A 5}

= \infty

.

Determine the open-circuit differential-mode voltage gain. What is the output resistance of the diff-amp? Find the value of load resistance

R_{L}

that reduces the differential-mode gain to 74 percent of the open-circuit value.

\begin{array}{lll} A_{d} (open circuit) \\ Format : 4622.5359058583 \\ R_{o} (k Ω) & Format : 782.54629054754 \\ R_{L} (k Ω) & ◻ & Format : 948.8308389362 \end{array}

Figure 11.30

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